#include <stdio.h>
#include <stdbool.h>
int main()

{
	int a = 10;
	printf("abcdef\b\n");
	_Bool flag = true;
	bool flag2 = false;
	if (flag)
		printf("hehe\n");
	printf("%zd\n", sizeof(char));
	printf("%zd\n", sizeof(int));
	printf("%zd\n", sizeof(long));
	printf("%zd\n", sizeof(long long));
	printf("%zd\n", sizeof(float));
	printf("%zd\n", sizeof(double));
	int b = 10;
	printf("%zd\n", sizeof(int));
	printf("%zd\n", sizeof(a));
	return 0;
}